// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2017-2019 The Linux Foundation. All rights reserved. */ #include #include #include #include #include #include #include "a6xx_gpu.h" #include "a6xx_gmu.xml.h" #include "msm_gem.h" #include "msm_gpu_trace.h" #include "msm_mmu.h" static void a6xx_gmu_fault(struct a6xx_gmu *gmu) { struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; struct msm_gpu *gpu = &adreno_gpu->base; /* FIXME: add a banner here */ gmu->hung = true; /* Turn off the hangcheck timer while we are resetting */ del_timer(&gpu->hangcheck_timer); /* Queue the GPU handler because we need to treat this as a recovery */ kthread_queue_work(gpu->worker, &gpu->recover_work); } static irqreturn_t a6xx_gmu_irq(int irq, void *data) { struct a6xx_gmu *gmu = data; u32 status; status = gmu_read(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_STATUS); gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, status); if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE) { dev_err_ratelimited(gmu->dev, "GMU watchdog expired\n"); a6xx_gmu_fault(gmu); } if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_HOST_AHB_BUS_ERROR) dev_err_ratelimited(gmu->dev, "GMU AHB bus error\n"); if (status & A6XX_GMU_AO_HOST_INTERRUPT_STATUS_FENCE_ERR) dev_err_ratelimited(gmu->dev, "GMU fence error: 0x%x\n", gmu_read(gmu, REG_A6XX_GMU_AHB_FENCE_STATUS)); return IRQ_HANDLED; } static irqreturn_t a6xx_hfi_irq(int irq, void *data) { struct a6xx_gmu *gmu = data; u32 status; status = gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO); gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, status); if (status & A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) { dev_err_ratelimited(gmu->dev, "GMU firmware fault\n"); a6xx_gmu_fault(gmu); } return IRQ_HANDLED; } bool a6xx_gmu_sptprac_is_on(struct a6xx_gmu *gmu) { u32 val; /* This can be called from gpu state code so make sure GMU is valid */ if (!gmu->initialized) return false; val = gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS); return !(val & (A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_SPTPRAC_GDSC_POWER_OFF | A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_SP_CLOCK_OFF)); } /* Check to see if the GX rail is still powered */ bool a6xx_gmu_gx_is_on(struct a6xx_gmu *gmu) { u32 val; /* This can be called from gpu state code so make sure GMU is valid */ if (!gmu->initialized) return false; val = gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS); return !(val & (A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_GDSC_POWER_OFF | A6XX_GMU_SPTPRAC_PWR_CLK_STATUS_GX_HM_CLK_OFF)); } void a6xx_gmu_set_freq(struct msm_gpu *gpu, struct dev_pm_opp *opp) { struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); struct a6xx_gmu *gmu = &a6xx_gpu->gmu; u32 perf_index; unsigned long gpu_freq; int ret = 0; gpu_freq = dev_pm_opp_get_freq(opp); if (gpu_freq == gmu->freq) return; for (perf_index = 0; perf_index < gmu->nr_gpu_freqs - 1; perf_index++) if (gpu_freq == gmu->gpu_freqs[perf_index]) break; gmu->current_perf_index = perf_index; gmu->freq = gmu->gpu_freqs[perf_index]; trace_msm_gmu_freq_change(gmu->freq, perf_index); /* * This can get called from devfreq while the hardware is idle. Don't * bring up the power if it isn't already active */ if (pm_runtime_get_if_in_use(gmu->dev) == 0) return; if (!gmu->legacy) { a6xx_hfi_set_freq(gmu, perf_index); dev_pm_opp_set_opp(&gpu->pdev->dev, opp); pm_runtime_put(gmu->dev); return; } gmu_write(gmu, REG_A6XX_GMU_DCVS_ACK_OPTION, 0); gmu_write(gmu, REG_A6XX_GMU_DCVS_PERF_SETTING, ((3 & 0xf) << 28) | perf_index); /* * Send an invalid index as a vote for the bus bandwidth and let the * firmware decide on the right vote */ gmu_write(gmu, REG_A6XX_GMU_DCVS_BW_SETTING, 0xff); /* Set and clear the OOB for DCVS to trigger the GMU */ a6xx_gmu_set_oob(gmu, GMU_OOB_DCVS_SET); a6xx_gmu_clear_oob(gmu, GMU_OOB_DCVS_SET); ret = gmu_read(gmu, REG_A6XX_GMU_DCVS_RETURN); if (ret) dev_err(gmu->dev, "GMU set GPU frequency error: %d\n", ret); dev_pm_opp_set_opp(&gpu->pdev->dev, opp); pm_runtime_put(gmu->dev); } unsigned long a6xx_gmu_get_freq(struct msm_gpu *gpu) { struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); struct a6xx_gmu *gmu = &a6xx_gpu->gmu; return gmu->freq; } static bool a6xx_gmu_check_idle_level(struct a6xx_gmu *gmu) { u32 val; int local = gmu->idle_level; /* SPTP and IFPC both report as IFPC */ if (gmu->idle_level == GMU_IDLE_STATE_SPTP) local = GMU_IDLE_STATE_IFPC; val = gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE); if (val == local) { if (gmu->idle_level != GMU_IDLE_STATE_IFPC || !a6xx_gmu_gx_is_on(gmu)) return true; } return false; } /* Wait for the GMU to get to its most idle state */ int a6xx_gmu_wait_for_idle(struct a6xx_gmu *gmu) { return spin_until(a6xx_gmu_check_idle_level(gmu)); } static int a6xx_gmu_start(struct a6xx_gmu *gmu) { int ret; u32 val; u32 mask, reset_val; val = gmu_read(gmu, REG_A6XX_GMU_CM3_DTCM_START + 0xff8); if (val <= 0x20010004) { mask = 0xffffffff; reset_val = 0xbabeface; } else { mask = 0x1ff; reset_val = 0x100; } gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1); /* Set the log wptr index * note: downstream saves the value in poweroff and restores it here */ gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_RESP, 0); gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 0); ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, val, (val & mask) == reset_val, 100, 10000); if (ret) DRM_DEV_ERROR(gmu->dev, "GMU firmware initialization timed out\n"); return ret; } static int a6xx_gmu_hfi_start(struct a6xx_gmu *gmu) { u32 val; int ret; gmu_write(gmu, REG_A6XX_GMU_HFI_CTRL_INIT, 1); ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_HFI_CTRL_STATUS, val, val & 1, 100, 10000); if (ret) DRM_DEV_ERROR(gmu->dev, "Unable to start the HFI queues\n"); return ret; } struct a6xx_gmu_oob_bits { int set, ack, set_new, ack_new; const char *name; }; /* These are the interrupt / ack bits for each OOB request that are set * in a6xx_gmu_set_oob and a6xx_clear_oob */ static const struct a6xx_gmu_oob_bits a6xx_gmu_oob_bits[] = { [GMU_OOB_GPU_SET] = { .name = "GPU_SET", .set = 16, .ack = 24, .set_new = 30, .ack_new = 31, }, [GMU_OOB_PERFCOUNTER_SET] = { .name = "PERFCOUNTER", .set = 17, .ack = 25, .set_new = 28, .ack_new = 30, }, [GMU_OOB_BOOT_SLUMBER] = { .name = "BOOT_SLUMBER", .set = 22, .ack = 30, }, [GMU_OOB_DCVS_SET] = { .name = "GPU_DCVS", .set = 23, .ack = 31, }, }; /* Trigger a OOB (out of band) request to the GMU */ int a6xx_gmu_set_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state) { int ret; u32 val; int request, ack; if (state >= ARRAY_SIZE(a6xx_gmu_oob_bits)) return -EINVAL; if (gmu->legacy) { request = a6xx_gmu_oob_bits[state].set; ack = a6xx_gmu_oob_bits[state].ack; } else { request = a6xx_gmu_oob_bits[state].set_new; ack = a6xx_gmu_oob_bits[state].ack_new; if (!request || !ack) { DRM_DEV_ERROR(gmu->dev, "Invalid non-legacy GMU request %s\n", a6xx_gmu_oob_bits[state].name); return -EINVAL; } } /* Trigger the equested OOB operation */ gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 1 << request); /* Wait for the acknowledge interrupt */ ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO, val, val & (1 << ack), 100, 10000); if (ret) DRM_DEV_ERROR(gmu->dev, "Timeout waiting for GMU OOB set %s: 0x%x\n", a6xx_gmu_oob_bits[state].name, gmu_read(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO)); /* Clear the acknowledge interrupt */ gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, 1 << ack); return ret; } /* Clear a pending OOB state in the GMU */ void a6xx_gmu_clear_oob(struct a6xx_gmu *gmu, enum a6xx_gmu_oob_state state) { int bit; if (state >= ARRAY_SIZE(a6xx_gmu_oob_bits)) return; if (gmu->legacy) bit = a6xx_gmu_oob_bits[state].ack; else bit = a6xx_gmu_oob_bits[state].ack_new; gmu_write(gmu, REG_A6XX_GMU_HOST2GMU_INTR_SET, 1 << bit); } /* Enable CPU control of SPTP power power collapse */ static int a6xx_sptprac_enable(struct a6xx_gmu *gmu) { int ret; u32 val; if (!gmu->legacy) return 0; gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778000); ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val, (val & 0x38) == 0x28, 1, 100); if (ret) { DRM_DEV_ERROR(gmu->dev, "Unable to power on SPTPRAC: 0x%x\n", gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS)); } return 0; } /* Disable CPU control of SPTP power power collapse */ static void a6xx_sptprac_disable(struct a6xx_gmu *gmu) { u32 val; int ret; if (!gmu->legacy) return; /* Make sure retention is on */ gmu_rmw(gmu, REG_A6XX_GPU_CC_GX_GDSCR, 0, (1 << 11)); gmu_write(gmu, REG_A6XX_GMU_GX_SPTPRAC_POWER_CONTROL, 0x778001); ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS, val, (val & 0x04), 100, 10000); if (ret) DRM_DEV_ERROR(gmu->dev, "failed to power off SPTPRAC: 0x%x\n", gmu_read(gmu, REG_A6XX_GMU_SPTPRAC_PWR_CLK_STATUS)); } /* Let the GMU know we are starting a boot sequence */ static int a6xx_gmu_gfx_rail_on(struct a6xx_gmu *gmu) { u32 vote; /* Let the GMU know we are getting ready for boot */ gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 0); /* Choose the "default" power level as the highest available */ vote = gmu->gx_arc_votes[gmu->nr_gpu_freqs - 1]; gmu_write(gmu, REG_A6XX_GMU_GX_VOTE_IDX, vote & 0xff); gmu_write(gmu, REG_A6XX_GMU_MX_VOTE_IDX, (vote >> 8) & 0xff); /* Let the GMU know the boot sequence has started */ return a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER); } /* Let the GMU know that we are about to go into slumber */ static int a6xx_gmu_notify_slumber(struct a6xx_gmu *gmu) { int ret; /* Disable the power counter so the GMU isn't busy */ gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 0); /* Disable SPTP_PC if the CPU is responsible for it */ if (gmu->idle_level < GMU_IDLE_STATE_SPTP) a6xx_sptprac_disable(gmu); if (!gmu->legacy) { ret = a6xx_hfi_send_prep_slumber(gmu); goto out; } /* Tell the GMU to get ready to slumber */ gmu_write(gmu, REG_A6XX_GMU_BOOT_SLUMBER_OPTION, 1); ret = a6xx_gmu_set_oob(gmu, GMU_OOB_BOOT_SLUMBER); a6xx_gmu_clear_oob(gmu, GMU_OOB_BOOT_SLUMBER); if (!ret) { /* Check to see if the GMU really did slumber */ if (gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE) != 0x0f) { DRM_DEV_ERROR(gmu->dev, "The GMU did not go into slumber\n"); ret = -ETIMEDOUT; } } out: /* Put fence into allow mode */ gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0); return ret; } static int a6xx_rpmh_start(struct a6xx_gmu *gmu) { int ret; u32 val; gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1 << 1); /* Wait for the register to finish posting */ wmb(); ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_RSCC_CONTROL_ACK, val, val & (1 << 1), 100, 10000); if (ret) { DRM_DEV_ERROR(gmu->dev, "Unable to power on the GPU RSC\n"); return ret; } ret = gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_SEQ_BUSY_DRV0, val, !val, 100, 10000); if (ret) { DRM_DEV_ERROR(gmu->dev, "GPU RSC sequence stuck while waking up the GPU\n"); return ret; } gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0); /* Set up CX GMU counter 0 to count busy ticks */ gmu_write(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_MASK, 0xff000000); gmu_rmw(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_SELECT_0, 0xff, 0x20); /* Enable the power counter */ gmu_write(gmu, REG_A6XX_GMU_CX_GMU_POWER_COUNTER_ENABLE, 1); return 0; } static void a6xx_rpmh_stop(struct a6xx_gmu *gmu) { int ret; u32 val; gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 1); ret = gmu_poll_timeout_rscc(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0, val, val & (1 << 16), 100, 10000); if (ret) DRM_DEV_ERROR(gmu->dev, "Unable to power off the GPU RSC\n"); gmu_write(gmu, REG_A6XX_GMU_RSCC_CONTROL_REQ, 0); } static inline void pdc_write(void __iomem *ptr, u32 offset, u32 value) { return msm_writel(value, ptr + (offset << 2)); } static void __iomem *a6xx_gmu_get_mmio(struct platform_device *pdev, const char *name); static void a6xx_gmu_rpmh_init(struct a6xx_gmu *gmu) { struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; struct platform_device *pdev = to_platform_device(gmu->dev); void __iomem *pdcptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc"); void __iomem *seqptr = a6xx_gmu_get_mmio(pdev, "gmu_pdc_seq"); uint32_t pdc_address_offset; if (!pdcptr || !seqptr) goto err; if (adreno_is_a618(adreno_gpu) || adreno_is_a640(adreno_gpu)) pdc_address_offset = 0x30090; else if (adreno_is_a650(adreno_gpu)) pdc_address_offset = 0x300a0; else pdc_address_offset = 0x30080; /* Disable SDE clock gating */ gmu_write_rscc(gmu, REG_A6XX_GPU_RSCC_RSC_STATUS0_DRV0, BIT(24)); /* Setup RSC PDC handshake for sleep and wakeup */ gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_SLAVE_ID_DRV0, 1); gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA, 0); gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR, 0); gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 2, 0); gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 2, 0); gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_DATA + 4, 0x80000000); gmu_write_rscc(gmu, REG_A6XX_RSCC_HIDDEN_TCS_CMD0_ADDR + 4, 0); gmu_write_rscc(gmu, REG_A6XX_RSCC_OVERRIDE_START_ADDR, 0); gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_SEQ_START_ADDR, 0x4520); gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_LO, 0x4510); gmu_write_rscc(gmu, REG_A6XX_RSCC_PDC_MATCH_VALUE_HI, 0x4514); /* Load RSC sequencer uCode for sleep and wakeup */ if (adreno_is_a650(adreno_gpu)) { gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0, 0xeaaae5a0); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 1, 0xe1a1ebab); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 2, 0xa2e0a581); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 3, 0xecac82e2); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 4, 0x0020edad); } else { gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0, 0xa7a506a0); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 1, 0xa1e6a6e7); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 2, 0xa2e081e1); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 3, 0xe9a982e2); gmu_write_rscc(gmu, REG_A6XX_RSCC_SEQ_MEM_0_DRV0 + 4, 0x0020e8a8); } /* Load PDC sequencer uCode for power up and power down sequence */ pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0, 0xfebea1e1); pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 1, 0xa5a4a3a2); pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 2, 0x8382a6e0); pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 3, 0xbce3e284); pdc_write(seqptr, REG_A6XX_PDC_GPU_SEQ_MEM_0 + 4, 0x002081fc); /* Set TCS commands used by PDC sequence for low power modes */ pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_ENABLE_BANK, 7); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD_WAIT_FOR_CMPL_BANK, 0); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CONTROL, 0); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID, 0x10108); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR, 0x30010); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA, 1); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 4, 0x10108); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 4, 0x30000); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 4, 0x0); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_MSGID + 8, 0x10108); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_ADDR + 8, pdc_address_offset); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS1_CMD0_DATA + 8, 0x0); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_ENABLE_BANK, 7); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD_WAIT_FOR_CMPL_BANK, 0); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CONTROL, 0); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID, 0x10108); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR, 0x30010); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA, 2); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 4, 0x10108); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 4, 0x30000); if (adreno_is_a618(adreno_gpu) || adreno_is_a650(adreno_gpu)) pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 4, 0x2); else pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 4, 0x3); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_MSGID + 8, 0x10108); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_ADDR + 8, pdc_address_offset); pdc_write(pdcptr, REG_A6XX_PDC_GPU_TCS3_CMD0_DATA + 8, 0x3); /* Setup GPU PDC */ pdc_write(pdcptr, REG_A6XX_PDC_GPU_SEQ_START_ADDR, 0); pdc_write(pdcptr, REG_A6XX_PDC_GPU_ENABLE_PDC, 0x80000001); /* ensure no writes happen before the uCode is fully written */ wmb(); err: if (!IS_ERR_OR_NULL(pdcptr)) iounmap(pdcptr); if (!IS_ERR_OR_NULL(seqptr)) iounmap(seqptr); } /* * The lowest 16 bits of this value are the number of XO clock cycles for main * hysteresis which is set at 0x1680 cycles (300 us). The higher 16 bits are * for the shorter hysteresis that happens after main - this is 0xa (.5 us) */ #define GMU_PWR_COL_HYST 0x000a1680 /* Set up the idle state for the GMU */ static void a6xx_gmu_power_config(struct a6xx_gmu *gmu) { /* Disable GMU WB/RB buffer */ gmu_write(gmu, REG_A6XX_GMU_SYS_BUS_CONFIG, 0x1); gmu_write(gmu, REG_A6XX_GMU_ICACHE_CONFIG, 0x1); gmu_write(gmu, REG_A6XX_GMU_DCACHE_CONFIG, 0x1); gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0x9c40400); switch (gmu->idle_level) { case GMU_IDLE_STATE_IFPC: gmu_write(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_HYST, GMU_PWR_COL_HYST); gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0, A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE | A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_HM_POWER_COLLAPSE_ENABLE); fallthrough; case GMU_IDLE_STATE_SPTP: gmu_write(gmu, REG_A6XX_GMU_PWR_COL_SPTPRAC_HYST, GMU_PWR_COL_HYST); gmu_rmw(gmu, REG_A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0, A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_IFPC_ENABLE | A6XX_GMU_PWR_COL_INTER_FRAME_CTRL_SPTPRAC_POWER_CONTROL_ENABLE); } /* Enable RPMh GPU client */ gmu_rmw(gmu, REG_A6XX_GMU_RPMH_CTRL, 0, A6XX_GMU_RPMH_CTRL_RPMH_INTERFACE_ENABLE | A6XX_GMU_RPMH_CTRL_LLC_VOTE_ENABLE | A6XX_GMU_RPMH_CTRL_DDR_VOTE_ENABLE | A6XX_GMU_RPMH_CTRL_MX_VOTE_ENABLE | A6XX_GMU_RPMH_CTRL_CX_VOTE_ENABLE | A6XX_GMU_RPMH_CTRL_GFX_VOTE_ENABLE); } struct block_header { u32 addr; u32 size; u32 type; u32 value; u32 data[]; }; /* this should be a general kernel helper */ static int in_range(u32 addr, u32 start, u32 size) { return addr >= start && addr < start + size; } static bool fw_block_mem(struct a6xx_gmu_bo *bo, const struct block_header *blk) { if (!in_range(blk->addr, bo->iova, bo->size)) return false; memcpy(bo->virt + blk->addr - bo->iova, blk->data, blk->size); return true; } static int a6xx_gmu_fw_load(struct a6xx_gmu *gmu) { struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; const struct firmware *fw_image = adreno_gpu->fw[ADRENO_FW_GMU]; const struct block_header *blk; u32 reg_offset; u32 itcm_base = 0x00000000; u32 dtcm_base = 0x00040000; if (adreno_is_a650(adreno_gpu)) dtcm_base = 0x10004000; if (gmu->legacy) { /* Sanity check the size of the firmware that was loaded */ if (fw_image->size > 0x8000) { DRM_DEV_ERROR(gmu->dev, "GMU firmware is bigger than the available region\n"); return -EINVAL; } gmu_write_bulk(gmu, REG_A6XX_GMU_CM3_ITCM_START, (u32*) fw_image->data, fw_image->size); return 0; } for (blk = (const struct block_header *) fw_image->data; (const u8*) blk < fw_image->data + fw_image->size; blk = (const struct block_header *) &blk->data[blk->size >> 2]) { if (blk->size == 0) continue; if (in_range(blk->addr, itcm_base, SZ_16K)) { reg_offset = (blk->addr - itcm_base) >> 2; gmu_write_bulk(gmu, REG_A6XX_GMU_CM3_ITCM_START + reg_offset, blk->data, blk->size); } else if (in_range(blk->addr, dtcm_base, SZ_16K)) { reg_offset = (blk->addr - dtcm_base) >> 2; gmu_write_bulk(gmu, REG_A6XX_GMU_CM3_DTCM_START + reg_offset, blk->data, blk->size); } else if (!fw_block_mem(&gmu->icache, blk) && !fw_block_mem(&gmu->dcache, blk) && !fw_block_mem(&gmu->dummy, blk)) { DRM_DEV_ERROR(gmu->dev, "failed to match fw block (addr=%.8x size=%d data[0]=%.8x)\n", blk->addr, blk->size, blk->data[0]); } } return 0; } static int a6xx_gmu_fw_start(struct a6xx_gmu *gmu, unsigned int state) { static bool rpmh_init; struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; int ret; u32 chipid; if (adreno_is_a650(adreno_gpu)) gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_CX_FAL_INTF, 1); if (state == GMU_WARM_BOOT) { ret = a6xx_rpmh_start(gmu); if (ret) return ret; } else { if (WARN(!adreno_gpu->fw[ADRENO_FW_GMU], "GMU firmware is not loaded\n")) return -ENOENT; /* Turn on register retention */ gmu_write(gmu, REG_A6XX_GMU_GENERAL_7, 1); /* We only need to load the RPMh microcode once */ if (!rpmh_init) { a6xx_gmu_rpmh_init(gmu); rpmh_init = true; } else { ret = a6xx_rpmh_start(gmu); if (ret) return ret; } ret = a6xx_gmu_fw_load(gmu); if (ret) return ret; } gmu_write(gmu, REG_A6XX_GMU_CM3_FW_INIT_RESULT, 0); gmu_write(gmu, REG_A6XX_GMU_CM3_BOOT_CONFIG, 0x02); /* Write the iova of the HFI table */ gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_ADDR, gmu->hfi.iova); gmu_write(gmu, REG_A6XX_GMU_HFI_QTBL_INFO, 1); gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_RANGE_0, (1 << 31) | (0xa << 18) | (0xa0)); chipid = adreno_gpu->rev.core << 24; chipid |= adreno_gpu->rev.major << 16; chipid |= adreno_gpu->rev.minor << 12; chipid |= adreno_gpu->rev.patchid << 8; gmu_write(gmu, REG_A6XX_GMU_HFI_SFR_ADDR, chipid); gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_PWR_COL_CP_MSG, gmu->log.iova | (gmu->log.size / SZ_4K - 1)); /* Set up the lowest idle level on the GMU */ a6xx_gmu_power_config(gmu); ret = a6xx_gmu_start(gmu); if (ret) return ret; if (gmu->legacy) { ret = a6xx_gmu_gfx_rail_on(gmu); if (ret) return ret; } /* Enable SPTP_PC if the CPU is responsible for it */ if (gmu->idle_level < GMU_IDLE_STATE_SPTP) { ret = a6xx_sptprac_enable(gmu); if (ret) return ret; } ret = a6xx_gmu_hfi_start(gmu); if (ret) return ret; /* FIXME: Do we need this wmb() here? */ wmb(); return 0; } #define A6XX_HFI_IRQ_MASK \ (A6XX_GMU_GMU2HOST_INTR_INFO_CM3_FAULT) #define A6XX_GMU_IRQ_MASK \ (A6XX_GMU_AO_HOST_INTERRUPT_STATUS_WDOG_BITE | \ A6XX_GMU_AO_HOST_INTERRUPT_STATUS_HOST_AHB_BUS_ERROR | \ A6XX_GMU_AO_HOST_INTERRUPT_STATUS_FENCE_ERR) static void a6xx_gmu_irq_disable(struct a6xx_gmu *gmu) { disable_irq(gmu->gmu_irq); disable_irq(gmu->hfi_irq); gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~0); gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~0); } static void a6xx_gmu_rpmh_off(struct a6xx_gmu *gmu) { u32 val; /* Make sure there are no outstanding RPMh votes */ gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS0_DRV0_STATUS, val, (val & 1), 100, 10000); gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS1_DRV0_STATUS, val, (val & 1), 100, 10000); gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS2_DRV0_STATUS, val, (val & 1), 100, 10000); gmu_poll_timeout_rscc(gmu, REG_A6XX_RSCC_TCS3_DRV0_STATUS, val, (val & 1), 100, 1000); } /* Force the GMU off in case it isn't responsive */ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu) { /* Flush all the queues */ a6xx_hfi_stop(gmu); /* Stop the interrupts */ a6xx_gmu_irq_disable(gmu); /* Force off SPTP in case the GMU is managing it */ a6xx_sptprac_disable(gmu); /* Make sure there are no outstanding RPMh votes */ a6xx_gmu_rpmh_off(gmu); } static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu) { struct dev_pm_opp *gpu_opp; unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index]; gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true); if (IS_ERR_OR_NULL(gpu_opp)) return; gmu->freq = 0; /* so a6xx_gmu_set_freq() doesn't exit early */ a6xx_gmu_set_freq(gpu, gpu_opp); dev_pm_opp_put(gpu_opp); } static void a6xx_gmu_set_initial_bw(struct msm_gpu *gpu, struct a6xx_gmu *gmu) { struct dev_pm_opp *gpu_opp; unsigned long gpu_freq = gmu->gpu_freqs[gmu->current_perf_index]; gpu_opp = dev_pm_opp_find_freq_exact(&gpu->pdev->dev, gpu_freq, true); if (IS_ERR_OR_NULL(gpu_opp)) return; dev_pm_opp_set_opp(&gpu->pdev->dev, gpu_opp); dev_pm_opp_put(gpu_opp); } int a6xx_gmu_resume(struct a6xx_gpu *a6xx_gpu) { struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; struct msm_gpu *gpu = &adreno_gpu->base; struct a6xx_gmu *gmu = &a6xx_gpu->gmu; int status, ret; if (WARN(!gmu->initialized, "The GMU is not set up yet\n")) return 0; gmu->hung = false; /* Turn on the resources */ pm_runtime_get_sync(gmu->dev); /* * "enable" the GX power domain which won't actually do anything but it * will make sure that the refcounting is correct in case we need to * bring down the GX after a GMU failure */ if (!IS_ERR_OR_NULL(gmu->gxpd)) pm_runtime_get_sync(gmu->gxpd); /* Use a known rate to bring up the GMU */ clk_set_rate(gmu->core_clk, 200000000); ret = clk_bulk_prepare_enable(gmu->nr_clocks, gmu->clocks); if (ret) { pm_runtime_put(gmu->gxpd); pm_runtime_put(gmu->dev); return ret; } /* Set the bus quota to a reasonable value for boot */ a6xx_gmu_set_initial_bw(gpu, gmu); /* Enable the GMU interrupt */ gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_CLR, ~0); gmu_write(gmu, REG_A6XX_GMU_AO_HOST_INTERRUPT_MASK, ~A6XX_GMU_IRQ_MASK); enable_irq(gmu->gmu_irq); /* Check to see if we are doing a cold or warm boot */ status = gmu_read(gmu, REG_A6XX_GMU_GENERAL_7) == 1 ? GMU_WARM_BOOT : GMU_COLD_BOOT; /* * Warm boot path does not work on newer GPUs * Presumably this is because icache/dcache regions must be restored */ if (!gmu->legacy) status = GMU_COLD_BOOT; ret = a6xx_gmu_fw_start(gmu, status); if (ret) goto out; ret = a6xx_hfi_start(gmu, status); if (ret) goto out; /* * Turn on the GMU firmware fault interrupt after we know the boot * sequence is successful */ gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_CLR, ~0); gmu_write(gmu, REG_A6XX_GMU_GMU2HOST_INTR_MASK, ~A6XX_HFI_IRQ_MASK); enable_irq(gmu->hfi_irq); /* Set the GPU to the current freq */ a6xx_gmu_set_initial_freq(gpu, gmu); out: /* On failure, shut down the GMU to leave it in a good state */ if (ret) { disable_irq(gmu->gmu_irq); a6xx_rpmh_stop(gmu); pm_runtime_put(gmu->gxpd); pm_runtime_put(gmu->dev); } return ret; } bool a6xx_gmu_isidle(struct a6xx_gmu *gmu) { u32 reg; if (!gmu->initialized) return true; reg = gmu_read(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS); if (reg & A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS_GPUBUSYIGNAHB) return false; return true; } #define GBIF_CLIENT_HALT_MASK BIT(0) #define GBIF_ARB_HALT_MASK BIT(1) static void a6xx_bus_clear_pending_transactions(struct adreno_gpu *adreno_gpu) { struct msm_gpu *gpu = &adreno_gpu->base; if (!a6xx_has_gbif(adreno_gpu)) { gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0xf); spin_until((gpu_read(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL1) & 0xf) == 0xf); gpu_write(gpu, REG_A6XX_VBIF_XIN_HALT_CTRL0, 0); return; } /* Halt new client requests on GBIF */ gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_CLIENT_HALT_MASK); spin_until((gpu_read(gpu, REG_A6XX_GBIF_HALT_ACK) & (GBIF_CLIENT_HALT_MASK)) == GBIF_CLIENT_HALT_MASK); /* Halt all AXI requests on GBIF */ gpu_write(gpu, REG_A6XX_GBIF_HALT, GBIF_ARB_HALT_MASK); spin_until((gpu_read(gpu, REG_A6XX_GBIF_HALT_ACK) & (GBIF_ARB_HALT_MASK)) == GBIF_ARB_HALT_MASK); /* The GBIF halt needs to be explicitly cleared */ gpu_write(gpu, REG_A6XX_GBIF_HALT, 0x0); } /* Gracefully try to shut down the GMU and by extension the GPU */ static void a6xx_gmu_shutdown(struct a6xx_gmu *gmu) { struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; u32 val; /* * The GMU may still be in slumber unless the GPU started so check and * skip putting it back into slumber if so */ val = gmu_read(gmu, REG_A6XX_GPU_GMU_CX_GMU_RPMH_POWER_STATE); if (val != 0xf) { int ret = a6xx_gmu_wait_for_idle(gmu); /* If the GMU isn't responding assume it is hung */ if (ret) { a6xx_gmu_force_off(gmu); return; } a6xx_bus_clear_pending_transactions(adreno_gpu); /* tell the GMU we want to slumber */ a6xx_gmu_notify_slumber(gmu); ret = gmu_poll_timeout(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS, val, !(val & A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS_GPUBUSYIGNAHB), 100, 10000); /* * Let the user know we failed to slumber but don't worry too * much because we are powering down anyway */ if (ret) DRM_DEV_ERROR(gmu->dev, "Unable to slumber GMU: status = 0%x/0%x\n", gmu_read(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS), gmu_read(gmu, REG_A6XX_GPU_GMU_AO_GPU_CX_BUSY_STATUS2)); } /* Turn off HFI */ a6xx_hfi_stop(gmu); /* Stop the interrupts and mask the hardware */ a6xx_gmu_irq_disable(gmu); /* Tell RPMh to power off the GPU */ a6xx_rpmh_stop(gmu); } int a6xx_gmu_stop(struct a6xx_gpu *a6xx_gpu) { struct a6xx_gmu *gmu = &a6xx_gpu->gmu; struct msm_gpu *gpu = &a6xx_gpu->base.base; if (!pm_runtime_active(gmu->dev)) return 0; /* * Force the GMU off if we detected a hang, otherwise try to shut it * down gracefully */ if (gmu->hung) a6xx_gmu_force_off(gmu); else a6xx_gmu_shutdown(gmu); /* Remove the bus vote */ dev_pm_opp_set_opp(&gpu->pdev->dev, NULL); /* * Make sure the GX domain is off before turning off the GMU (CX) * domain. Usually the GMU does this but only if the shutdown sequence * was successful */ if (!IS_ERR_OR_NULL(gmu->gxpd)) pm_runtime_put_sync(gmu->gxpd); clk_bulk_disable_unprepare(gmu->nr_clocks, gmu->clocks); pm_runtime_put_sync(gmu->dev); return 0; } static void a6xx_gmu_memory_free(struct a6xx_gmu *gmu) { msm_gem_kernel_put(gmu->hfi.obj, gmu->aspace, false); msm_gem_kernel_put(gmu->debug.obj, gmu->aspace, false); msm_gem_kernel_put(gmu->icache.obj, gmu->aspace, false); msm_gem_kernel_put(gmu->dcache.obj, gmu->aspace, false); msm_gem_kernel_put(gmu->dummy.obj, gmu->aspace, false); msm_gem_kernel_put(gmu->log.obj, gmu->aspace, false); gmu->aspace->mmu->funcs->detach(gmu->aspace->mmu); msm_gem_address_space_put(gmu->aspace); } static int a6xx_gmu_memory_alloc(struct a6xx_gmu *gmu, struct a6xx_gmu_bo *bo, size_t size, u64 iova) { struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct drm_device *dev = a6xx_gpu->base.base.dev; uint32_t flags = MSM_BO_WC; u64 range_start, range_end; int ret; size = PAGE_ALIGN(size); if (!iova) { /* no fixed address - use GMU's uncached range */ range_start = 0x60000000 + PAGE_SIZE; /* skip dummy page */ range_end = 0x80000000; } else { /* range for fixed address */ range_start = iova; range_end = iova + size; /* use IOMMU_PRIV for icache/dcache */ flags |= MSM_BO_MAP_PRIV; } bo->obj = msm_gem_new(dev, size, flags); if (IS_ERR(bo->obj)) return PTR_ERR(bo->obj); ret = msm_gem_get_and_pin_iova_range(bo->obj, gmu->aspace, &bo->iova, range_start >> PAGE_SHIFT, range_end >> PAGE_SHIFT); if (ret) { drm_gem_object_put(bo->obj); return ret; } bo->virt = msm_gem_get_vaddr(bo->obj); bo->size = size; return 0; } static int a6xx_gmu_memory_probe(struct a6xx_gmu *gmu) { struct iommu_domain *domain; struct msm_mmu *mmu; domain = iommu_domain_alloc(&platform_bus_type); if (!domain) return -ENODEV; mmu = msm_iommu_new(gmu->dev, domain); gmu->aspace = msm_gem_address_space_create(mmu, "gmu", 0x0, 0x80000000); if (IS_ERR(gmu->aspace)) { iommu_domain_free(domain); return PTR_ERR(gmu->aspace); } return 0; } /* Return the 'arc-level' for the given frequency */ static unsigned int a6xx_gmu_get_arc_level(struct device *dev, unsigned long freq) { struct dev_pm_opp *opp; unsigned int val; if (!freq) return 0; opp = dev_pm_opp_find_freq_exact(dev, freq, true); if (IS_ERR(opp)) return 0; val = dev_pm_opp_get_level(opp); dev_pm_opp_put(opp); return val; } static int a6xx_gmu_rpmh_arc_votes_init(struct device *dev, u32 *votes, unsigned long *freqs, int freqs_count, const char *id) { int i, j; const u16 *pri, *sec; size_t pri_count, sec_count; pri = cmd_db_read_aux_data(id, &pri_count); if (IS_ERR(pri)) return PTR_ERR(pri); /* * The data comes back as an array of unsigned shorts so adjust the * count accordingly */ pri_count >>= 1; if (!pri_count) return -EINVAL; sec = cmd_db_read_aux_data("mx.lvl", &sec_count); if (IS_ERR(sec)) return PTR_ERR(sec); sec_count >>= 1; if (!sec_count) return -EINVAL; /* Construct a vote for each frequency */ for (i = 0; i < freqs_count; i++) { u8 pindex = 0, sindex = 0; unsigned int level = a6xx_gmu_get_arc_level(dev, freqs[i]); /* Get the primary index that matches the arc level */ for (j = 0; j < pri_count; j++) { if (pri[j] >= level) { pindex = j; break; } } if (j == pri_count) { DRM_DEV_ERROR(dev, "Level %u not found in the RPMh list\n", level); DRM_DEV_ERROR(dev, "Available levels:\n"); for (j = 0; j < pri_count; j++) DRM_DEV_ERROR(dev, " %u\n", pri[j]); return -EINVAL; } /* * Look for a level in in the secondary list that matches. If * nothing fits, use the maximum non zero vote */ for (j = 0; j < sec_count; j++) { if (sec[j] >= level) { sindex = j; break; } else if (sec[j]) { sindex = j; } } /* Construct the vote */ votes[i] = ((pri[pindex] & 0xffff) << 16) | (sindex << 8) | pindex; } return 0; } /* * The GMU votes with the RPMh for itself and on behalf of the GPU but we need * to construct the list of votes on the CPU and send it over. Query the RPMh * voltage levels and build the votes */ static int a6xx_gmu_rpmh_votes_init(struct a6xx_gmu *gmu) { struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; struct msm_gpu *gpu = &adreno_gpu->base; int ret; /* Build the GX votes */ ret = a6xx_gmu_rpmh_arc_votes_init(&gpu->pdev->dev, gmu->gx_arc_votes, gmu->gpu_freqs, gmu->nr_gpu_freqs, "gfx.lvl"); /* Build the CX votes */ ret |= a6xx_gmu_rpmh_arc_votes_init(gmu->dev, gmu->cx_arc_votes, gmu->gmu_freqs, gmu->nr_gmu_freqs, "cx.lvl"); return ret; } static int a6xx_gmu_build_freq_table(struct device *dev, unsigned long *freqs, u32 size) { int count = dev_pm_opp_get_opp_count(dev); struct dev_pm_opp *opp; int i, index = 0; unsigned long freq = 1; /* * The OPP table doesn't contain the "off" frequency level so we need to * add 1 to the table size to account for it */ if (WARN(count + 1 > size, "The GMU frequency table is being truncated\n")) count = size - 1; /* Set the "off" frequency */ freqs[index++] = 0; for (i = 0; i < count; i++) { opp = dev_pm_opp_find_freq_ceil(dev, &freq); if (IS_ERR(opp)) break; dev_pm_opp_put(opp); freqs[index++] = freq++; } return index; } static int a6xx_gmu_pwrlevels_probe(struct a6xx_gmu *gmu) { struct a6xx_gpu *a6xx_gpu = container_of(gmu, struct a6xx_gpu, gmu); struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; struct msm_gpu *gpu = &adreno_gpu->base; int ret = 0; /* * The GMU handles its own frequency switching so build a list of * available frequencies to send during initialization */ ret = dev_pm_opp_of_add_table(gmu->dev); if (ret) { DRM_DEV_ERROR(gmu->dev, "Unable to set the OPP table for the GMU\n"); return ret; } gmu->nr_gmu_freqs = a6xx_gmu_build_freq_table(gmu->dev, gmu->gmu_freqs, ARRAY_SIZE(gmu->gmu_freqs)); /* * The GMU also handles GPU frequency switching so build a list * from the GPU OPP table */ gmu->nr_gpu_freqs = a6xx_gmu_build_freq_table(&gpu->pdev->dev, gmu->gpu_freqs, ARRAY_SIZE(gmu->gpu_freqs)); gmu->current_perf_index = gmu->nr_gpu_freqs - 1; /* Build the list of RPMh votes that we'll send to the GMU */ return a6xx_gmu_rpmh_votes_init(gmu); } static int a6xx_gmu_clocks_probe(struct a6xx_gmu *gmu) { int ret = devm_clk_bulk_get_all(gmu->dev, &gmu->clocks); if (ret < 1) return ret; gmu->nr_clocks = ret; gmu->core_clk = msm_clk_bulk_get_clock(gmu->clocks, gmu->nr_clocks, "gmu"); return 0; } static void __iomem *a6xx_gmu_get_mmio(struct platform_device *pdev, const char *name) { void __iomem *ret; struct resource *res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); if (!res) { DRM_DEV_ERROR(&pdev->dev, "Unable to find the %s registers\n", name); return ERR_PTR(-EINVAL); } ret = ioremap(res->start, resource_size(res)); if (!ret) { DRM_DEV_ERROR(&pdev->dev, "Unable to map the %s registers\n", name); return ERR_PTR(-EINVAL); } return ret; } static int a6xx_gmu_get_irq(struct a6xx_gmu *gmu, struct platform_device *pdev, const char *name, irq_handler_t handler) { int irq, ret; irq = platform_get_irq_byname(pdev, name); ret = request_irq(irq, handler, IRQF_TRIGGER_HIGH, name, gmu); if (ret) { DRM_DEV_ERROR(&pdev->dev, "Unable to get interrupt %s %d\n", name, ret); return ret; } disable_irq(irq); return irq; } void a6xx_gmu_remove(struct a6xx_gpu *a6xx_gpu) { struct a6xx_gmu *gmu = &a6xx_gpu->gmu; struct platform_device *pdev = to_platform_device(gmu->dev); if (!gmu->initialized) return; pm_runtime_force_suspend(gmu->dev); if (!IS_ERR_OR_NULL(gmu->gxpd)) { pm_runtime_disable(gmu->gxpd); dev_pm_domain_detach(gmu->gxpd, false); } iounmap(gmu->mmio); if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc")) iounmap(gmu->rscc); gmu->mmio = NULL; gmu->rscc = NULL; a6xx_gmu_memory_free(gmu); free_irq(gmu->gmu_irq, gmu); free_irq(gmu->hfi_irq, gmu); /* Drop reference taken in of_find_device_by_node */ put_device(gmu->dev); gmu->initialized = false; } int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) { struct adreno_gpu *adreno_gpu = &a6xx_gpu->base; struct a6xx_gmu *gmu = &a6xx_gpu->gmu; struct platform_device *pdev = of_find_device_by_node(node); int ret; if (!pdev) return -ENODEV; gmu->dev = &pdev->dev; of_dma_configure(gmu->dev, node, true); /* Fow now, don't do anything fancy until we get our feet under us */ gmu->idle_level = GMU_IDLE_STATE_ACTIVE; pm_runtime_enable(gmu->dev); /* Get the list of clocks */ ret = a6xx_gmu_clocks_probe(gmu); if (ret) goto err_put_device; ret = a6xx_gmu_memory_probe(gmu); if (ret) goto err_put_device; /* Allocate memory for the GMU dummy page */ ret = a6xx_gmu_memory_alloc(gmu, &gmu->dummy, SZ_4K, 0x60000000); if (ret) goto err_memory; if (adreno_is_a650(adreno_gpu)) { ret = a6xx_gmu_memory_alloc(gmu, &gmu->icache, SZ_16M - SZ_16K, 0x04000); if (ret) goto err_memory; } else if (adreno_is_a640(adreno_gpu)) { ret = a6xx_gmu_memory_alloc(gmu, &gmu->icache, SZ_256K - SZ_16K, 0x04000); if (ret) goto err_memory; ret = a6xx_gmu_memory_alloc(gmu, &gmu->dcache, SZ_256K - SZ_16K, 0x44000); if (ret) goto err_memory; } else { /* HFI v1, has sptprac */ gmu->legacy = true; /* Allocate memory for the GMU debug region */ ret = a6xx_gmu_memory_alloc(gmu, &gmu->debug, SZ_16K, 0); if (ret) goto err_memory; } /* Allocate memory for for the HFI queues */ ret = a6xx_gmu_memory_alloc(gmu, &gmu->hfi, SZ_16K, 0); if (ret) goto err_memory; /* Allocate memory for the GMU log region */ ret = a6xx_gmu_memory_alloc(gmu, &gmu->log, SZ_4K, 0); if (ret) goto err_memory; /* Map the GMU registers */ gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu"); if (IS_ERR(gmu->mmio)) { ret = PTR_ERR(gmu->mmio); goto err_memory; } if (adreno_is_a650(adreno_gpu)) { gmu->rscc = a6xx_gmu_get_mmio(pdev, "rscc"); if (IS_ERR(gmu->rscc)) goto err_mmio; } else { gmu->rscc = gmu->mmio + 0x23000; } /* Get the HFI and GMU interrupts */ gmu->hfi_irq = a6xx_gmu_get_irq(gmu, pdev, "hfi", a6xx_hfi_irq); gmu->gmu_irq = a6xx_gmu_get_irq(gmu, pdev, "gmu", a6xx_gmu_irq); if (gmu->hfi_irq < 0 || gmu->gmu_irq < 0) goto err_mmio; /* * Get a link to the GX power domain to reset the GPU in case of GMU * crash */ gmu->gxpd = dev_pm_domain_attach_by_name(gmu->dev, "gx"); /* Get the power levels for the GMU and GPU */ a6xx_gmu_pwrlevels_probe(gmu); /* Set up the HFI queues */ a6xx_hfi_init(gmu); gmu->initialized = true; return 0; err_mmio: iounmap(gmu->mmio); if (platform_get_resource_byname(pdev, IORESOURCE_MEM, "rscc")) iounmap(gmu->rscc); free_irq(gmu->gmu_irq, gmu); free_irq(gmu->hfi_irq, gmu); ret = -ENODEV; err_memory: a6xx_gmu_memory_free(gmu); err_put_device: /* Drop reference taken in of_find_device_by_node */ put_device(gmu->dev); return ret; }